projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| af6359d5 ILT |
1 | // tls.h -- Thread-Local Storage utility routines for gold -*- C++ -*- |
| 2 | ||
| 4b95cf5c | 3 | // Copyright (C) 2006-2014 Free Software Foundation, Inc. |
| af6359d5 ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
| 5 | ||
| 6 | // This file is part of gold. | |
| 7 | ||
| 8 | // This program is free software; you can redistribute it and/or modify | |
| 9 | // it under the terms of the GNU General Public License as published by | |
| 10 | // the Free Software Foundation; either version 3 of the License, or | |
| 11 | // (at your option) any later version. | |
| 12 | ||
| 13 | // This program is distributed in the hope that it will be useful, | |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | // GNU General Public License for more details. | |
| 17 | ||
| 18 | // You should have received a copy of the GNU General Public License | |
| 19 | // along with this program; if not, write to the Free Software | |
| 20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
| 21 | // MA 02110-1301, USA. | |
| 22 | ||
| 23 | #ifndef GOLD_TLS_H | |
| 24 | #define GOLD_TLS_H | |
| 25 | ||
| 26 | #include "elfcpp.h" | |
| 27 | #include "reloc.h" | |
| 28 | ||
| 29 | namespace gold | |
| 30 | { | |
| 31 | ||
| 32 | namespace tls | |
| 33 | { | |
| 34 | ||
| 35 | // This is used for relocations that can be converted to a different, | |
| 36 | // more efficient type of relocation. | |
| 37 | ||
| 38 | enum Tls_optimization | |
| 39 | { | |
| 40 | TLSOPT_NONE, // Can not convert this relocation to a more efficient one. | |
| 41 | TLSOPT_TO_LD, // Can convert General Dynamic to Local Dynamic. | |
| 42 | TLSOPT_TO_LE, // Can convert GD or LD to Local-Exec. | |
| 43 | TLSOPT_TO_IE, // Can convert GD or LD or LE to Initial-Exec. | |
| 44 | }; | |
| 45 | ||
| 46 | // Check the range for a TLS relocation. This is inlined for efficiency. | |
| 47 | ||
| 48 | template<int size, bool big_endian> | |
| 49 | inline void | |
| 50 | check_range(const Relocate_info<size, big_endian>* relinfo, | |
| 51 | size_t relnum, | |
| 52 | typename elfcpp::Elf_types<size>::Elf_Addr rel_offset, | |
| fe8718a4 | 53 | section_size_type view_size, int off) |
| af6359d5 | 54 | { |
| fe8718a4 ILT |
55 | typename elfcpp::Elf_types<size>::Elf_Addr offset = rel_offset + off; |
| 56 | // Elf_Addr is unsigned, so this also tests for signed offset < 0. | |
| 57 | if (offset > view_size) | |
| 75f2446e ILT |
58 | gold_error_at_location(relinfo, relnum, rel_offset, |
| 59 | _("TLS relocation out of range")); | |
| af6359d5 ILT |
60 | } |
| 61 | ||
| 62 | // Check the validity of a TLS relocation. This is like assert. | |
| 63 | ||
| 64 | template<int size, bool big_endian> | |
| 65 | inline void | |
| 66 | check_tls(const Relocate_info<size, big_endian>* relinfo, | |
| 67 | size_t relnum, | |
| 68 | typename elfcpp::Elf_types<size>::Elf_Addr rel_offset, | |
| 69 | bool valid) | |
| 70 | { | |
| 71 | if (!valid) | |
| 75f2446e ILT |
72 | gold_error_at_location(relinfo, relnum, rel_offset, |
| 73 | _("TLS relocation against invalid instruction")); | |
| af6359d5 ILT |
74 | } |
| 75 | ||
| 76 | ||
| 77 | } // End namespace tls. | |
| 78 | ||
| 79 | } // End namespace gold. | |
| 80 | ||
| 81 | #endif // !defined(GOLD_TLS_H) |